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Surselva Surselva Region is one of the eleven administrative districts in the canton of Graubünden in Switzerland. It was created on 1 January 2017 as part of a reorganization of the canton.Graubünden,
Switzerland ). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel ...
, source1_coordinates= , source1_elevation = , source2 = Rein Posteriur/Hinterrhein , source2_location = Paradies Glacier, Graubünden,
Switzerland ). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel ...
, source2_coordinates= , source2_elevation = , source_confluence = Reichenau , source_confluence_location = Tamins, Graubünden,
Switzerland ). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel ...
, source_confluence_coordinates= , source_confluence_elevation = , mouth = North Sea , mouth_location = Netherlands , mouth_coordinates = , mouth_elevation = , progression = , river_system = , basin_size = , tributaries_left = , tributaries_right = , custom_label = , custom_data = , extra = The Rhine ; french: Rhin ; nl, Rijn ; wa, Rén ; li, Rien; rm, label=
Sursilvan Sursilvan (; also ''romontsch sursilvan'' ; Sursilvan, Vallader, Surmiran, Sutsilvan, and Rumantsch Grischun: ''sursilvan''; Puter: ''sursilvaun'') is a group of dialects of the Romansh language spoken in the Swiss district of Surselva. It is t ...
, Rein, rm, label=
Sutsilvan Romansh (; sometimes also spelled Romansch and Rumantsch; Sursilvan: ; Vallader, Surmiran, and Rumantsch Grischun: ; Putèr: ; Sutsilvan: , , ; Jauer: ) is a Gallo-Romance language spoken predominantly in the Swiss canton of the Grison ...
and
Surmiran Surmiran (Surmiran, Vallader, Sutsilvan, Rumantsch Grischun: ''surmiran''; Puter: ''surmiraun'') is a dialect of the Romansh language. It is spoken in Surmeir and in the Albula Valley in the Grisons Canton, in Switzerland ). Swiss law ...
, Ragn, rm, label= Rumantsch Grischun, Vallader and Puter, Rain; it, Reno ; gsw, Rhi(n), including in Alsatian and
Low Alemannic German Low Alemannic German (german: Niederalemannisch) is a branch of Alemannic German, which is part of Upper German. Its varieties are only partly intelligible to non-Alemannic speakers. Subdivisions *Lake Constance Alemannic ( de) **Northern Vora ...
; ksh, label= Ripuarian and Low Franconian, Rhing; la, Rhenus ; hu, Rajna . is one of the major European rivers. The river begins in the Swiss canton of Graubünden in the southeastern
Swiss Alps The Alpine region of Switzerland, conventionally referred to as the Swiss Alps (german: Schweizer Alpen, french: Alpes suisses, it, Alpi svizzere, rm, Alps svizras), represents a major natural feature of the country and is, along with the Swiss ...
. It forms part of the Swiss-Liechtenstein, Swiss-Austrian, Swiss-German borders. After that the Rhine defines much of the Franco-German border, after which it flows in a mostly northerly direction through the German Rhineland. Finally in Germany the Rhine turns into a predominantly westerly direction and flows into the Netherlands where it eventually empties into the North Sea. It drains an area of 9,973 sq km and its name derives from the Celtic ''Rēnos''. There are also two German states named after the river, North Rhine-Westphalia and Rhineland-Palatinate. It is the second-longest river in Central and Western Europe (after the Danube), at about , with an average discharge of about . The Rhine and the Danube comprised much of the Roman Empire's northern inland boundary, and the Rhine has been a vital navigable waterway bringing trade and goods deep inland since those days. The various castles and defenses built along it attest to its prominence as a waterway in the Holy Roman Empire. Among the largest and most important cities on the Rhine are Cologne, Rotterdam, Düsseldorf, Duisburg,
Strasbourg Strasbourg (, , ; german: Straßburg ; gsw, label=Bas Rhin Alsatian, Strossburi , gsw, label=Haut Rhin Alsatian, Strossburig ) is the prefecture and largest city of the Grand Est region of eastern France and the official seat of the Eu ...
,
Nijmegen Nijmegen (;; Spanish and it, Nimega. Nijmeegs: ''Nimwèège'' ) is the largest city in the Dutch province of Gelderland and tenth largest of the Netherlands as a whole, located on the Waal river close to the German border. It is about 6 ...
, and Basel.


Name

The variants of the name of the Rhine in modern languages are all derived from the Gaulish name ', which was adapted in Roman-era geography (1st century BC) as Greek ('), Latin '. The spelling with ''Rh-'' in English ''Rhine'' as well as in German ' and French ' is due to the influence of Greek orthography, while the vocalization ''-i-'' is due to the Proto-Germanic adoption of the Gaulish name as *'' Rīnaz'', via
Old Frankish Frankish ( reconstructed endonym: *), also known as Old Franconian or Old Frankish, was the West Germanic language spoken by the Franks from the 5th to 9th century. After the Salian Franks settled in Roman Gaul, its speakers in Picardy an ...
giving
Old English Old English (, ), or Anglo-Saxon, is the earliest recorded form of the English language, spoken in England and southern and eastern Scotland in the early Middle Ages. It was brought to Great Britain by Anglo-Saxon settlement of Britain, Anglo ...
', Old High German ', early Middle Dutch (c. 1200) ' (then also spelled ' or '). The modern German diphthong ' (also used in Romansh) ' is a
Central German Central German or Middle German (german: mitteldeutsche Dialekte, mitteldeutsche Mundarten, Mitteldeutsch) is a group of High German dialects spoken from the Rhineland in the west to the former eastern territories of Germany. Central German di ...
development of the early modern period, with the
Alemannic Alemannic (''Alamannic'') or Alamanni may refer to: * Alemannic German, a dialect family in the Upper German branch of the German languages and its speakers * Alemanni, a confederation of Suebian Germanic tribes in the Roman period * Alamanni (surna ...
name ' keeping the older vocalism. In Alemannic, the deletion of the ending ''-n'' in pausa is a recent development; the form ' is largely preserved in Lucernese dialects. ' in Ripuarian is diphthongized, as is ' in Palatine. While Spanish has adopted the Germanic vocalism ', Italian, Occitan, and Portuguese have retained the Latin '. The Gaulish name ''Rēnos'' ( Proto-Celtic or pre-Celtic ''*Reinos'') belongs to a class of river names built from the
PIE root The roots of the reconstructed Proto-Indo-European language (PIE) are basic parts of words that carry a lexical meaning, so-called morphemes. PIE roots usually have verbal meaning like "to eat" or "to run". Roots never occurred alone in the lang ...
' "to move, flow, run", also found in other names such as the Reno in Italy. The grammatical gender of the
Celtic Celtic, Celtics or Keltic may refer to: Language and ethnicity *pertaining to Celts, a collection of Indo-European peoples in Europe and Anatolia **Celts (modern) *Celtic languages **Proto-Celtic language * Celtic music *Celtic nations Sports Fo ...
name (as well as of its Greek and Latin adaptation) is masculine, and the name remains masculine in German, Dutch, French, Spanish and Italian. The Old English river name was variously inflected as masculine or feminine; and its
Old Icelandic Old Norse, Old Nordic, or Old Scandinavian, is a stage of development of North Germanic dialects before their final divergence into separate Nordic languages. Old Norse was spoken by inhabitants of Scandinavia and their overseas settlement ...
adoption was inflected as feminine.


Geography

The length of the Rhine is conventionally measured in "Rhine-kilometers" (''Rheinkilometer''), a scale introduced in 1939 which runs from the Old Rhine Bridge at Constance (0 km) to Hook of Holland (1036.20 km). The river is significantly shortened from its natural course due to a number of canalization projects completed in the 19th and 20th century. The "total length of the Rhine", to the inclusion of
Lake Constance Lake Constance (german: Bodensee, ) refers to three Body of water, bodies of water on the Rhine at the northern foot of the Alps: Upper Lake Constance (''Obersee''), Lower Lake Constance (''Untersee''), and a connecting stretch of the Rhine, ca ...
and the Alpine Rhine is more difficult to measure objectively; it was cited as by the Dutch Rijkswaterstaat in 2010. Its course is conventionally divided as follows:


Headwaters and sources


Sources

The Rhine carries its name without distinctive accessories only from the confluence of the Rein Anteriur/Vorderrhein and Rein Posteriur/Hinterrhein next to Reichenau in Tamins. Above this point is the extensive catchment of the headwaters of the Rhine. It belongs almost exclusively to the Swiss canton of Graubünden, ranging from Saint-Gotthard Massif in the west via one valley lying in Ticino and Italy in the south to the
Flüela Pass The Flüela Pass (german: Flüelapass, rm, Pass dal Flüela, elevation ) is a high mountain pass of the Swiss Alps in Graubünden. Traditionally considered the boundary between the Albula and Silvretta Alps, the pass crosses the watershed / ...
in the east. The Rhine is one of the four major rivers taking their source in the Gotthard region, along with the Ticino, Rhône and
Reuss Reuss may refer to: *Reuss (surname) *Reuss (river) in Switzerland *Reuss (state) or Reuß, several former states or countries in present-day Germany, and the Republic of Reuss *Reuss Elder Line and Reuss Younger Line (House of Reuss), members incl ...
. Traditionally, Lake Toma near the Oberalp Pass in the Gotthard region is seen as the source of the Anterior Rhine and the Rhine as a whole. The Posterior Rhine rises in the Rheinwald below the Rheinwaldhorn.


Anterior Rhine and Posterior Rhine

The source of the river is generally considered north of '' Lai da Tuma/Tomasee'' on ''Rein Anteriur/Vorderrhein'', although its southern tributary ''
Rein da Medel The Rein da Medel ( it, Reno di Medel; german: Medelser Rhein) is the longest headwater of the Rhine. It is located in the Swiss cantons of Ticino and Graubünden and flows through the valleys Val Cadlimo and Val Medel. ''Rein da Medel'' is the ...
'' is actually longer before its confluence with the Anterior Rhine near Disentis. :The Anterior Rhine ( rm, Rein Anteriur, german: Vorderrhein) springs from ''Lai da Tuma/Tomasee'', near the Oberalp Pass and passes the impressive ''
Ruinaulta Ruinaulta is a canyon created by the Anterior Rhine by Ilanz/Glion and Reichenau in the debris of the Flims Rockslide just upstream of its confluence with the Posterior Rhine at Reichenau in the Grisons, eastern Switzerland. It is sometimes k ...
'' formed by the largest visible rock slide in the alps, the Flims Rockslide. :The Posterior Rhine ( rm, Rein Posteriur, german: Hinterrhein) starts from the Paradies Glacier, near the ''Rheinwaldhorn''. One of its tributaries, the ''Reno di Lei'', drains the ''
Valle di Lei Lago di Lei is a reservoir in the Valle di Lei, powering the Hinterrhein Pumped-storage hydroelectricity, storage power stations. The reservoir is almost entirely in Italy, but the barrage was built on territory ceded by Italy to Switzerland (muni ...
'' on politically Italian territory. After three main valleys separated by the two gorges, ''
Roflaschlucht The Rofla Gorge ( rm, Puntcrap, german: Roflaschlucht) is an ancient and narrow section of the river Hinterrhein/Rein Posteriur between Sufers and Andeer in the canton of Graubünden. This narrow gorge was another obstacle on the approach to the ...
'' and '' Viamala'', it reaches Reichenau in Tamins. The Anterior Rhine arises from numerous source streams in the upper
Surselva Surselva Region is one of the eleven administrative districts in the canton of Graubünden in Switzerland. It was created on 1 January 2017 as part of a reorganization of the canton.Lai da Tuma'' () with the '' Rein da Tuma'', which is usually indicated as source of the Rhine, flowing through it. Into it flow tributaries from the south, some longer, some equal in length, such as the ''Rein da Medel'', the '' Rein da Maighels'', and the ''
Rein da Curnera The Rein da Curnera (in german: Curnerarhein) is a right tributary of the Anterior Rhine and one of the main tributaries of the Rhine (see Sources of the Rhine). It is fed from multiple sources and glaciers at the southern end of the valley. The ...
''. The Cadlimo Valley in the
canton of Ticino Ticino (), sometimes Tessin (), officially the Republic and Canton of Ticino or less formally the Canton of Ticino,, informally ''Canton Ticino'' ; lmo, Canton Tesin ; german: Kanton Tessin ; french: Canton du Tessin ; rm, Chantun dal Tessin . ...
is drained by the ''Reno di Medel'', which crosses the
geomorphologic Geomorphology (from Ancient Greek: , ', "earth"; , ', "form"; and , ', "study") is the scientific study of the origin and evolution of topographic and bathymetric features created by physical, chemical or biological processes operating at or n ...
Alpine main ridge from the south. All streams in the source area are partially, sometimes completely, captured and sent to storage reservoirs for the local hydro-electric power plants. The culminating point of the Anterior Rhine's drainage basin is the
Piz Russein Piz may refer to: * Piz Gloria, a mountain-top restaurant in Switzerland * Piz Buin, a mountain * Piz Dolf, a mountain * Piz Segnas, a mountain * Piz Buin (brand), a suncream brand * Piz (river), a river in Russia * Stosh "Piz" Piznarski '' ...
of the Tödi massif of the Glarus Alps at above sea level. It starts with the creek ''Aua da Russein'' (lit.: "Water of the Russein"). In its lower course, the Anterior Rhine flows through a gorge named ''
Ruinaulta Ruinaulta is a canyon created by the Anterior Rhine by Ilanz/Glion and Reichenau in the debris of the Flims Rockslide just upstream of its confluence with the Posterior Rhine at Reichenau in the Grisons, eastern Switzerland. It is sometimes k ...
'' (Flims Rockslide). The whole stretch of the Anterior Rhine to the Alpine Rhine confluence next to Reichenau in Tamins is accompanied by a long-distance hiking trail called ''Senda Sursilvana''. The Posterior Rhine flows first east-northeast, then north. It flows through the three valleys named Rheinwald, Schams and Domleschg-
Heinzenberg Heinzenberg is an ''Ortsgemeinde'' – a Municipalities of Germany, municipality belonging to a ''Verbandsgemeinde'', a kind of collective municipality – in the Bad Kreuznach (district), Bad Kreuznach Districts of Germany, district in Rhineland-P ...
. The valleys are separated by the
Rofla Gorge The Rofla Gorge ( rm, Puntcrap, german: Roflaschlucht) is an ancient and narrow section of the river Hinterrhein/Rein Posteriur between Sufers and Andeer in the canton of Graubünden. This narrow gorge was another obstacle on the approach to the ...
and Viamala Gorge. Its sources are located in the
Adula Alps , topo_map= Swiss Federal Office of Topography swisstopo , photo=MonteLeone0001.jpg , photo_caption=Monte Leone , country_type= Countries , country= , subdivision1_type= Cantons, Regions , subdivision1= , parent= Western Alps , borders_o ...
( Rheinwaldhorn,
Rheinquellhorn The Vogelberg is a 3,218 metres high mountain of the Lepontine Alps, located on the border between the Swiss cantons of Ticino and Graubünden. It is the highest summit of the Lepontine Alps south of the Rheinwaldhorn. The Vogelberg is a large ...
, and
Güferhorn The Güferhorn is a mountain in the Lepontine Alps, located between the valleys of Vals, Switzerland, Vals and Hinterrhein, Switzerland, Hinterrhein in Graubünden. At 3,379 metres above sea level it is the highest summit of the Lepontine Alps l ...
). The Avers Rhine joins from the south. One of its headwaters, the ''Reno di Lei'' (stowed in the
Lago di Lei Lago di Lei is a reservoir in the Valle di Lei, powering the Hinterrhein storage power stations. The reservoir is almost entirely in Italy, but the barrage was built on territory ceded by Italy to Switzerland (municipality of Ferrera, Grisons) i ...
), is partially located in Italy. Near
Sils Sils or SILS may refer to: Places *Sils, Girona, a municipality in the ''comarca'' of Selva in Catalonia, Spain **Lake Sils (Catalonia), an ancient lake near Sils, Catalonia, Spain ** Lake Sils, a lake in the Upper Engadine in the Grisons, Switzerl ...
the Posterior Rhine is joined by the
Albula Albula may refer to: Places *Albula, an old (possibly legendary) name of the Tiber river Switzerland *Albula Range, a mountain range *Albula (river), a tributary of the Hinterrhein *Albula District, a district in canton Graubünden until 2017 ** ...
, from the east, from the
Albula Pass The Albula Pass ( Romansh: ''Pass d'Alvra'' or , german: Albulapass) (el. 2312 m) is a Swiss mountain pass in the canton of Graubünden. It lies at the heart of the Albula Alps, on the watershed between the Albula, tributary of the Rhine and the ...
region. The Albula draws its water mainly from the
Landwasser The Landwasser is a river in Switzerland, canton of Graubünden. Its origin was Lake Davos before this was turned into a reservoir for a power station. Nowadays it is prolonged by the creek Flüelabach at its source and changes its name near Davo ...
with the
Dischmabach The Dischmabach is a river of approximately 15 km long in the river system of Albula. It drains the Dischma valley, its catchment area lies mainly in the area of the Swiss municipality of Davos. The source Dischmabach has two equal headwat ...
as the largest source stream, but almost as much from the Gelgia, which comes down from the Julier Pass. Numerous larger and smaller tributary rivers bear the name of the ''Rhine'' or equivalent in various Romansh idioms like ''Rein'' or ''Ragn''. Examples: * Anterior Rhine area: ''Rein Anteriur/Vorderrhein'', ''
Rein da Medel The Rein da Medel ( it, Reno di Medel; german: Medelser Rhein) is the longest headwater of the Rhine. It is located in the Swiss cantons of Ticino and Graubünden and flows through the valleys Val Cadlimo and Val Medel. ''Rein da Medel'' is the ...
'', '' Rein da Tuma'', ''
Rein da Curnera The Rein da Curnera (in german: Curnerarhein) is a right tributary of the Anterior Rhine and one of the main tributaries of the Rhine (see Sources of the Rhine). It is fed from multiple sources and glaciers at the southern end of the valley. The ...
'', '' Rein da Maighels'', ''Rein da Cristallina'', ''Rein da Nalps'', ''Rein da Plattas'', ''Rein da Sumvitg'', ''Rein da Vigliuts'', ''
Valser Rhine The Valser Rhine (german: Valser Rhein) is a source of the river Rhine in the Swiss canton of Graubünden. The river originates from the Länta Glacier and the Grauhorn Glacier at the northern foot of the Rheinwaldhorn and initially flows throu ...
'' * Posterior Rhine basin: ''Rein Posteriur/Hinterrhein'', ''
Reno di Lei Reno ( ) is a city in the northwest section of the U.S. state of Nevada, along the Nevada-California border, about north from Lake Tahoe, known as "The Biggest Little City in the World". Known for its casino and tourism industry, Reno is the c ...
'', ''Madrischer Rhein'', '' Avers Rhine'', ''Jufer Rhein'' * Albula-Landwasser area: In the
Dischma The Dischma is a valley on the territory of the Swiss municipality of Davos. The name is derived from the la, decimus ("Tenth"). It is documented as ''decimata'' in the 12th century. Location Dischma is the average of the three long, gently ...
valley, near Davos, far east of the Rhine, there's a place called ''Am Rin'' ("Upon Rhine"). A tributary of the Dischma is called ''Riner Tälli''. Nearby, on the other side of the Sertig, is the ''Rinerhorn''.


Alpine Rhine

Next to Reichenau in Tamins the Anterior Rhine and the
Posterior Rhine The Hinterrhein (German; Italian: ''Reno Posteriore''; Sutsilvan: ''Ragn Posteriur''; Sursilvan: ''Rein Posteriur''; Rumantsch Grischun, Vallader, and Puter: ''Rain Posteriur''; Surmiran: ''Ragn posteriour''; en, Posterior Rhine) is one of the ...
join and form the Alpine Rhine. The river makes a distinctive turn to the north near Chur. This section is nearly 86 km long, and descends from a height of 599 meters to 396 meters. It flows through a wide glacial Alpine valley known as the Rhine Valley (german: Rheintal). Near
Sargans Sargans is a municipality in the ''Wahlkreis'' (constituency) of Sarganserland in the canton of St. Gallen in Switzerland. Sargans is known for its castle, which dates from before the founding of the Swiss Confederation in 1291. Sargans was also ...
a natural dam, only a few meters high, prevents it from flowing into the open Seeztal valley and then through Lake Walen and Lake Zurich into the Aare. The Alpine Rhine begins in the westernmost part of the Swiss canton of Graubünden, and later forms the border between Switzerland to the west and Liechtenstein and later Austria to the east. As an effect of human work, it empties into
Lake Constance Lake Constance (german: Bodensee, ) refers to three Body of water, bodies of water on the Rhine at the northern foot of the Alps: Upper Lake Constance (''Obersee''), Lower Lake Constance (''Untersee''), and a connecting stretch of the Rhine, ca ...
on Austrian territory and not on the border that follows its old natural river bed. The mouth of the Rhine into Lake Constance forms an inland delta. The delta is delimited in the west by the ''
Alter Rhein The Alter Rhein (German for ''Old Rhine'') is the old river bed of the Alpine Rhine in St. Gallen and Vorarlberg in the Alpine Rhine Valley, which was cut off when the Rhine was straightened during the 20th century. These cut-off arms have bec ...
'' ("Old Rhine") and in the east by a modern canalized section. Most of the delta is a nature reserve and bird sanctuary. It includes the Austrian towns of
Gaißau Gaißau is a municipality in the district of Bregenz in the Austrian state of Vorarlberg Vorarlberg ( , ; gsw, label= Vorarlbergisch, Vorarlbearg, , or ) is the westernmost state () of Austria. It has the second-smallest geographical area af ...
, Höchst and
Fußach Fußach is a municipality in the district of Bregenz in the Austrian state of Vorarlberg Vorarlberg ( , ; gsw, label= Vorarlbergisch, Vorarlbearg, , or ) is the westernmost state () of Austria. It has the second-smallest geographical area a ...
. The natural Rhine originally branched into at least two arms and formed small islands by precipitating sediments. In the local
Alemannic Alemannic (''Alamannic'') or Alamanni may refer to: * Alemannic German, a dialect family in the Upper German branch of the German languages and its speakers * Alemanni, a confederation of Suebian Germanic tribes in the Roman period * Alamanni (surna ...
dialect, the singular is pronounced "Isel" and this is also the local pronunciation of ''Esel'' ("
Donkey The domestic donkey is a hoofed mammal in the family Equidae, the same family as the horse. It derives from the African wild ass, ''Equus africanus'', and may be classified either as a subspecies thereof, ''Equus africanus asinus'', or as a ...
"). Many local fields have an official name containing this element. A regulation of the Rhine was called for, with an upper canal near Diepoldsau and a lower canal at Fußach, in order to counteract the constant flooding and strong sedimentation in the western Rhine Delta. The Dornbirner Ach had to be diverted, too, and it now flows parallel to the canalized Rhine into the lake. Its water has a darker color than the Rhine; the latter's lighter suspended load comes from higher up the mountains. It is expected that the continuous input of sediment into the lake will silt up the lake. This has already happened to the former Lake Tuggenersee. The cut-off Old Rhine at first formed a
swamp A swamp is a forested wetland.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p. Swamps are considered to be transition zones because both land and water play a role in ...
landscape. Later an artificial ditch of about two km was dug. It was made navigable to the Swiss town of
Rheineck Rheineck is a municipality in the ''Wahlkreis'' (constituency) of Rheintal in the canton of St. Gallen in Switzerland. History Rheineck is first mentioned about 1163 as ''castellum Rinegge''. In 1218 it was mentioned as ''Rinegg''. An older ...
.


Lake Constance

Lake Constance consists of three bodies of water: the Obersee ("upper lake"), the Untersee ("lower lake"), and a connecting stretch of the Rhine, called the Seerhein ("Lake Rhine"). The lake is situated in Germany, Switzerland and Austria near the Alps. Specifically, its shorelines lie in the German states of Bavaria and Baden-Württemberg, the Austrian state of Vorarlberg, and the Swiss cantons of Thurgau and St. Gallen. The Rhine flows into it from the south following the Swiss-Austrian border. It is located at approximately .


Obersee

The flow of cold, grey mountain water continues for some distance into the lake. The cold water flows near the surface and at first doesn't mix with the warmer, green waters of Upper Lake. But then, at the so-called ''Rheinbrech'', the Rhine water abruptly falls into the depths because of the greater density of cold water. The flow reappears on the surface at the northern (German) shore of the lake, off the island of Lindau. The water then follows the northern shore until
Hagnau am Bodensee Hagnau am Bodensee is a commune and a village in the district of Bodensee in Baden-Württemberg in Germany. It lies on the north shore of Lake Constance Lake Constance (german: Bodensee, ) refers to three Body of water, bodies of water on t ...
. A small fraction of the flow is diverted off the island of Mainau into Lake Überlingen. Most of the water flows via the ''Constance hopper'' into the ''Rheinrinne'' ("Rhine Gutter") and Seerhein. Depending on the water level, this flow of the Rhine water is clearly visible along the entire length of the lake. The Rhine carries very large amounts of debris into the lake. In the mouth region, it is therefore necessary to permanently remove gravel by dredging. The large sediment loads are partly due to the extensive
land improvements Land development is the alteration of landscape in any number of ways such as: * Changing landforms from a natural or semi-natural state for a purpose such as agriculture or housing * Subdividing real estate into lots, typically for the purpos ...
upstream. Three countries border the Obersee, namely Switzerland in the south, Austria in the southeast and the German states of Bavaria in the northeast and Baden-Württemberg in the north and northwest.


Seerhein

The
Seerhein The Seerhein ("Lake Rhine") is a river about four kilometres long, in the basin of Lake Constance. It is the outflow of the Upper Lake Constance and the main tributary of the Lower Lake Constance. The water level of the lower lake is about 30&n ...
is only long. It connects the Obersee with the 30 cm lower Untersee. Distance markers along the Rhine measure the distance from the bridge in the old city center of
Constance Constance may refer to: Places *Konstanz, Germany, sometimes written as Constance in English *Constance Bay, Ottawa, Canada * Constance, Kentucky * Constance, Minnesota * Constance (Portugal) * Mount Constance, Washington State People * Consta ...
. For most of its length, the Seerhein forms the border between Germany and Switzerland. The exception is the old city center of Constance, on the Swiss side of the river. The Seerhein emerged in the last thousands of years, when erosion caused the lake level to be lowered by about 10 meters. Previously, the two lakes formed a single lake, as the name still suggests.


Untersee

Like in the Obersee, the flow the Rhine can be traced in the Untersee. Here, too, the river water is hardly mixed with the lake water. The northern parts of the Untersee (Lake Zell and Gnadensee) remain virtually unaffected by the flow. The river traverses the southern, which, in isolation, is sometimes called ''Rhinesee'' ("Lake Rhine"). The Radolfzeller Aach adds large amounts of water from the Danube system to the Untersee. Reichenau Island was formed at the same time as the Seerhein, when the water level fell to its current level. Lake Untersee is part of the border between Switzerland and Germany, with Germany on the north bank and Switzerland on the south, except both sides are Swiss in Stein am Rhein, where the High Rhine flows out of the lake.


High Rhine

The Rhine emerges from Lake Constance, flows generally westward, as the ''Hochrhein'', passes the Rhine Falls, and is joined by its major tributary, the Aare. The Aare more than doubles the Rhine's water discharge, to an average of nearly , and provides more than a fifth of the discharge at the Dutch border. The Aare also contains the waters from the summit of Finsteraarhorn, the highest point of the Rhine basin. The Rhine roughly forms the
German-Swiss border The German-speaking part of Switzerland (german: Deutschschweiz, french: Suisse alémanique, it, Svizzera tedesca, rm, Svizra tudestga) comprises about 65 percent of Switzerland (North Western Switzerland, Eastern Switzerland, Central Switz ...
from Lake Constance with the exceptions of the canton of Schaffhausen and parts of the cantons of Zürich and
Basel-Stadt Basel-Stadt or Basel-City (german: Kanton ; rm, Chantun Basilea-Citad; french: Canton de Bâle-Ville; it, Canton Basilea Città) is one of the 26 cantons forming the Swiss Confederation. It is composed of three municipalities with Basel as t ...
, until it turns north at the so-called Rhine knee at Basel, leaving Switzerland. The High Rhine begins in Stein am Rhein at the western end of the Untersee. Unlike the Alpine Rhine and Upper Rhine, it flows to the west. It descends from 395 m to 252 m. Some stretches of the High Rhine between Stein am Rhein and Eglisau form the border between Switzerland on the south bank and Germany in the north. On other stretches, both sides are Swiss; in fact most of the canton of Schaffhausen is on the north bank. Between Eglisau and Basel, the High Rhine consistently forms the border. The Rhine Falls are situated below Schaffhausen. With an average water flow of 373 m³/s (mean summer discharge 700 m³/s) it is the largest waterfall in Europe in terms of
potential energy In physics, potential energy is the energy held by an object because of its position relative to other objects, stresses within itself, its electric charge, or other factors. Common types of potential energy include the gravitational potentia ...
. The High Rhine is characterized by numerous dams. On the few remaining natural sections, there are still several
rapids Rapids are sections of a river where the river bed has a relatively steep gradient, causing an increase in water velocity and turbulence. Rapids are hydrological features between a ''run'' (a smoothly flowing part of a stream) and a ''cascade''. ...
. Near
Koblenz Koblenz (; Moselle Franconian language, Moselle Franconian: ''Kowelenz''), spelled Coblenz before 1926, is a German city on the banks of the Rhine and the Moselle, a multi-nation tributary. Koblenz was established as a Roman Empire, Roman mili ...
in the canton of Aargau, the Aare joins the Rhine. With an average discharge of 557 m³/s, the Aare is more voluminous than the Rhine, which has an average discharge of 439 m³/s. Nevertheless, the Alpine Rhine is considered the main branch, because it is longer.


Upper Rhine

In the center of Basel, the first major city in the course of the stream, is located the " Rhine knee"; this is a major bend, where the overall direction of the Rhine changes from west to north. Here the High Rhine ends. Legally, the Central Bridge is the boundary between High and Upper Rhine. The river now flows north as Upper Rhine through the Upper Rhine Plain, which is about 300 km long and up to 40 km wide. The most important tributaries in this area are the
Ill ILL may refer to: * ''I Love Lucy'', a landmark American television sitcom * Illorsuit Heliport (location identifier: ILL), a heliport in Illorsuit, Greenland * Institut Laue–Langevin, an internationally financed scientific facility * Interlibrar ...
below of Strasbourg, the
Neckar The Neckar () is a river in Germany, mainly flowing through the southwestern state of Baden-Württemberg, with a short section through Hesse. The Neckar is a major right tributary of the Rhine. Rising in the Schwarzwald-Baar-Kreis near Schwenn ...
in Mannheim and the Main across from Mainz. In Mainz, the Rhine leaves the Upper Rhine Valley and flows through the Mainz Basin. The southern half of the Upper Rhine forms the border between France ( Alsace) and Germany (Baden-Württemberg). The northern part forms the border between the German states of Rhineland-Palatinate in the west on the one hand, and Baden-Württemberg and Hesse on the other hand, in the east and north. A curiosity of this border line is that the parts of the city of Mainz on the right bank of the Rhine were given to Hesse by the occupying forces in 1945. The Upper Rhine was a significant cultural landscape in Central Europe already in
antiquity Antiquity or Antiquities may refer to: Historical objects or periods Artifacts *Antiquities, objects or artifacts surviving from ancient cultures Eras Any period before the European Middle Ages (5th to 15th centuries) but still within the histo ...
and during the Middle Ages. Today, the Upper Rhine area hosts many important manufacturing and service industries, particularly in the centers Basel, Strasbourg and Mannheim-Ludwigshafen. Strasbourg is the seat of the European Parliament, and so one of the three European capitals is located on the Upper Rhine. The Upper Rhine region was changed significantly by a Rhine straightening program in the 19th century. The rate of flow was increased and the ground water level fell significantly. Dead branches were removed by construction workers and the area around the river was made more habitable for humans on
flood plains A floodplain or flood plain or bottomlands is an area of land adjacent to a river which stretches from the banks of its channel to the base of the enclosing valley walls, and which experiences flooding during periods of high discharge.Goudi ...
as the rate of flooding decreased sharply. On the French side, the
Grand Canal d'Alsace The Grand Canal of Alsace (, ) is a canal in eastern France, channeling the Upper Rhine river. It is 50 kilometers (about 30 miles) long between Kembs and Vogelgrun, and provides access to the region from the Rhine River, Basel in Switzerland, ...
was dug, which carries a significant part of the river water, and all of the traffic. In some places, there are large compensation pools, for example, the huge ''Bassin de compensation de Plobsheim'' in Alsace. The Upper Rhine has undergone significant human change since the 19th century. While it was slightly modified during the Roman occupation, it was not until the emergence of engineers such as
Johann Gottfried Tulla Johann Gottfried Tulla (20 March 1770, in Karlsruhe – 27 March 1828, in Paris) was a German engineer who accomplished the straightening of the Rhine, improving navigation and alleviating the effects of flooding. His measures gave the Upper Rhine ...
that significant modernization efforts changed the shape of the river. Earlier work under Frederick the Great surrounded efforts to ease shipping and construct dams to serve coal transportation. Tulla is considered to have domesticated the Upper Rhine, a domestication that served goals such as reducing stagnant
bogs A bog or bogland is a wetland that accumulates peat as a deposit of dead plant materials often mosses, typically sphagnum moss. It is one of the four main Wetland#Types, types of wetlands. Other names for bogs include mire, mosses, quagmire, ...
that fostered waterborne diseases, making regions more habitable for human settlement, and reduce high frequency of floods. Not long before Tulla went to work on widening and straightening the river, heavy floods caused significant loss of life. Four diplomatic treaties were signed among German state governments and French regions dealing with the changes proposed along the Rhine, one was "the Treaty for the Rectification of the Rhine flow from Neuberg to Dettenheim"(1817), which surrounded states such as
Bourbon France The Kingdom of France ( fro, Reaume de France; frm, Royaulme de France; french: link=yes, Royaume de France) is the historiographical name or umbrella term given to various political entities of France in the Middle Ages, medieval and Early mod ...
and the
Bavarian Palatinate The Electoral Palatinate (german: Kurpfalz) or the Palatinate (), officially the Electorate of the Palatinate (), was a state that was part of the Holy Roman Empire. The electorate had its origins under the rulership of the Counts Palatine of ...
. Loops,
oxbows __NOTOC__ An oxbow is a U-shaped metal pole (or larger wooden frame) that fits the underside and the sides of the neck of an ox or bullock. A bow pin holds it in place. The term "oxbow" is widely used to refer to a U-shaped meander in a river, ...
, branches and islands were removed along the Upper Rhine so that there would be uniformity to the river. The engineering of the Rhine was not without protest, farmers and fishermen had grave concerns about valuable fishing areas and farmland being lost. While some areas lost ground, other areas saw swamps and bogs be drained and turned into arable land. Johann Tulla had the goal of shortening and straightening the Upper Rhine. Early engineering projects the Upper Rhine also had issues, with Tulla's project at one part of the river creating rapids, after the Rhine cut down from erosion to sheer rock. Engineering along the Rhine eased flooding and made transportation along the river less cumbersome. These state projects were part of the advanced and technical progress going on in the country alongside the industrial revolution. For the German state, making the river more predictable was to ensure development projects could easily commence. The section of the Upper Rhine downstream from Mainz is also known as the "Island Rhine". Here a number of river islands occur, locally known as "Rheinauen".


Middle Rhine

The Rhine is the longest river in Germany. It is here that the Rhine encounters some more of its main tributaries, such as the
Neckar The Neckar () is a river in Germany, mainly flowing through the southwestern state of Baden-Württemberg, with a short section through Hesse. The Neckar is a major right tributary of the Rhine. Rising in the Schwarzwald-Baar-Kreis near Schwenn ...
, the Main and, later, the
Moselle The Moselle ( , ; german: Mosel ; lb, Musel ) is a river that rises in the Vosges mountains and flows through north-eastern France and Luxembourg to western Germany. It is a bank (geography), left bank tributary of the Rhine, which it jo ...
, which contributes an average discharge of more than . Northeastern France drains to the Rhine via the Moselle; smaller rivers drain the Vosges and
Jura Mountains The Jura Mountains ( , , , ; french: Massif du Jura; german: Juragebirge; it, Massiccio del Giura, rm, Montagnas da Jura) are a sub-alpine mountain range a short distance north of the Western Alps and mainly demarcate a long part of the Frenc ...
uplands. Most of Luxembourg and a very small part of Belgium also drain to the Rhine via the Moselle. As it approaches the Dutch border, the Rhine has an annual mean discharge of and an average width of . Between Bingen am Rhein and Bonn, the Middle Rhine flows through the Rhine Gorge, a formation which was created by erosion. The rate of erosion equaled the
uplift Uplift may refer to: Science * Geologic uplift, a geological process ** Tectonic uplift, a geological process * Stellar uplift, the theoretical prospect of moving a stellar mass * Uplift mountains * Llano Uplift * Nemaha Uplift Business * Uplif ...
in the region, such that the river was left at about its original level while the surrounding lands raised. The gorge is quite deep and is the stretch of the river which is known for its many castles and vineyards. It is a UNESCO World Heritage Site (2002) and known as "the Romantic Rhine", with more than 40 castles and fortresses from the Middle Ages and many quaint and lovely country villages. The Mainz Basin ends in Bingen am Rhein; the Rhine continues as "Middle Rhine" into the Rhine Gorge in the Rhenish Slate Mountains. In this sections the river falls from 77.4 m above sea level to 50.4 m. On the left, is located the mountain ranges of
Hunsrück The Hunsrück () is a long, triangular, pronounced upland in Rhineland-Palatinate, Germany. It is bounded by the valleys of the Moselle-Saar (north-to-west), the Nahe (south), and the Rhine (east). It is continued by the Taunus mountains, past ...
and
Eifel The Eifel (; lb, Äifel, ) is a low mountain range in western Germany and eastern Belgium. It occupies parts of southwestern North Rhine-Westphalia, northwestern Rhineland-Palatinate and the southern area of the German-speaking Community of ...
, on the right Taunus and Westerwald. According to geologists, the characteristic narrow valley form was created by erosion by the river while the surrounding landscape was lifted (see water gap). Major tributaries in this section are the Lahn and the
Moselle The Moselle ( , ; german: Mosel ; lb, Musel ) is a river that rises in the Vosges mountains and flows through north-eastern France and Luxembourg to western Germany. It is a bank (geography), left bank tributary of the Rhine, which it jo ...
. They join the Rhine near
Koblenz Koblenz (; Moselle Franconian language, Moselle Franconian: ''Kowelenz''), spelled Coblenz before 1926, is a German city on the banks of the Rhine and the Moselle, a multi-nation tributary. Koblenz was established as a Roman Empire, Roman mili ...
, for the right and left respectively. Almost the entire length of the Middle Rhine runs in the German state of Rhineland-Palatinate. The dominant economic sectors in the Middle Rhine area are viniculture and tourism. The Rhine Gorge between Rüdesheim am Rhein and
Koblenz Koblenz (; Moselle Franconian language, Moselle Franconian: ''Kowelenz''), spelled Coblenz before 1926, is a German city on the banks of the Rhine and the Moselle, a multi-nation tributary. Koblenz was established as a Roman Empire, Roman mili ...
is listed as a UNESCO World Heritage Site. Near Sankt Goarshausen, the Rhine flows around the famous rock Lorelei. With its outstanding architectural monuments, the slopes full of vines, settlements crowded on the narrow river banks and scores of castles lined up along the top of the steep slopes, the Middle Rhine Valley can be considered the epitome of the Rhine romanticism.


Lower Rhine

In Bonn, where the Sieg flows into the Rhine, the Rhine enters the North German Plain and turns into the Lower Rhine. The Lower Rhine falls from 50 m to 12 m. The main tributaries on this stretch are the
Ruhr The Ruhr ( ; german: Ruhrgebiet , also ''Ruhrpott'' ), also referred to as the Ruhr area, sometimes Ruhr district, Ruhr region, or Ruhr valley, is a polycentric urban area in North Rhine-Westphalia, Germany. With a population density of 2,800/km ...
and the Lippe. Like the Upper Rhine, the Lower Rhine used to meander until engineering created a solid river bed. Because the levees are some distance from the river, at high tide the Lower Rhine has more room for widening than the Upper Rhine. The Lower Rhine flows through North Rhine-Westphalia. Its banks are usually heavily populated and industrialized, in particular the
agglomerations An urban area, built-up area or urban agglomeration is a human settlement with a high population density and infrastructure of built environment. Urban areas are created through urbanization and are categorized by urban morphology as cities, ...
Cologne, Düsseldorf and Ruhr area. Here the Rhine flows through the largest conurbation in Germany, the Rhine-Ruhr region. One of the most important cities in this region is Duisburg with the largest
river port An inland port is a port on an inland waterway, such as a river, lake, or canal, which may or may not be connected to the sea. The term "inland port" is also used to refer to a dry port. Examples The United States Army Corps of Engineers publ ...
in Europe (Duisport). The region downstream of Duisburg is more agricultural. In Wesel, 30 km downstream of Duisburg, is located the western end of the second east–west shipping route, the Wesel-Datteln Canal, which runs parallel to the Lippe. Between
Emmerich Emmerich may refer to: Places * Emmerich am Rhein, city in North Rhine-Westphalia, Germany ** Emmerich Rhine Bridge ** Emmerich station * Emmerich, Wisconsin, unincorporated community in the town of Berlin, Wisconsin, United States Other uses * ...
and Cleves the
Emmerich Rhine Bridge The Emmerich Rhine Bridge (german: 'Rheinbrücke Emmerich') is a suspension bridge located in Emmerich am Rhein, Germany. Completed in 1965, it has a main span of , crossing the Rhine, carrying the Bundesstraße B 220, the federal highway betwe ...
, the longest suspension bridge in Germany, crosses the river. Near Krefeld, the river crosses the Uerdingen line, the line which separates the areas where
Low German : : : : : (70,000) (30,000) (8,000) , familycolor = Indo-European , fam2 = Germanic , fam3 = West Germanic , fam4 = North Sea Germanic , ancestor = Old Saxon , ancestor2 = Middle L ...
and High German are spoken. Until the early 1980s, industry was a major source of water pollution. Although many plants and factories can be found along the Rhine up into
Switzerland ). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel ...
, it is along the Lower Rhine that the bulk of them are concentrated, as the river passes the major cities of Cologne, Düsseldorf and Duisburg. Duisburg is the home of Europe's largest inland port and functions as a hub to the sea ports of Rotterdam, Antwerp and Amsterdam. The
Ruhr The Ruhr ( ; german: Ruhrgebiet , also ''Ruhrpott'' ), also referred to as the Ruhr area, sometimes Ruhr district, Ruhr region, or Ruhr valley, is a polycentric urban area in North Rhine-Westphalia, Germany. With a population density of 2,800/km ...
, which joins the Rhine in Duisburg, is nowadays a clean river, thanks to a combination of stricter environmental controls, a transition from heavy industry to light industry and cleanup measures, such as the reforestation of
Slag Slag is a by-product of smelting (pyrometallurgical) ores and used metals. Broadly, it can be classified as ferrous (by-products of processing iron and steel), ferroalloy (by-product of ferroalloy production) or non-ferrous/base metals (by-prod ...
and brownfields. The Ruhr currently provides the region with drinking water. It contributes to the Rhine. Other rivers in the Ruhr Area, above all, the Emscher, still carry a considerable degree of pollution.


Delta

The Dutch name for Rhine is "Rijn". The Rhine turns west and enters the Netherlands, where, together with the rivers Meuse and Scheldt, it forms the extensive Rhine-Meuse-Scheldt delta, with the largest river delta in Europe. Crossing the border into the Netherlands at Spijk, close to
Nijmegen Nijmegen (;; Spanish and it, Nimega. Nijmeegs: ''Nimwèège'' ) is the largest city in the Dutch province of Gelderland and tenth largest of the Netherlands as a whole, located on the Waal river close to the German border. It is about 6 ...
and Arnhem, the Rhine is at its widest, although the river then splits into three main distributaries: the Waal, Nederrijn ("Nether Rhine") and IJssel. From here, the situation becomes more complicated, as the Dutch name ''Rijn'' no longer coincides with the main flow of water. Two-thirds of the water flow volume of the Rhine flows farther west, through the Waal and then, via the Merwede and Nieuwe Merwede ( De Biesbosch), merging with the Meuse, through the
Hollands Diep Hollands Diep ( pre-1947 spelling: Hollandsch Diep) is a wide river in the Netherlands and an estuary of the Rhine and Meuse rivers. Through the Scheldt-Rhine Canal it connects to the Scheldt river and Antwerp. The Bergse Maas river and the N ...
and
Haringvliet The Haringvliet is a large inlet of the North Sea, in the province of South Holland in the Netherlands. It is an important estuary of the Rhine-Meuse delta. Near Numansdorp, the Hollands Diep splits into the Haringvliet and the Volkerak estu ...
estuaries, into the North Sea. The Beneden Merwede branches off, near Hardinxveld-Giessendam and continues as the
Noord Noord () is a town and region in Aruba (part of the Kingdom of the Netherlands). This town is known for its low rise and high rise hotels, restaurants, beaches, malls, the California Lighthouse, and other places of attraction. Places of interest ...
, to join the
Lek Lek or LEK may refer to: * Lek mating, mating in a lek, a type of animal territory in which males of a species gather * Albanian lek, the currency of Albania * Lek (magazine), a Norwegian softcore pornographic magazine * Lek (pharmaceutical comp ...
, near the village of Kinderdijk, to form the Nieuwe Maas; then flows past Rotterdam and continues via
Het Scheur Het Scheur (; Dutch for "The Rip") is a branch of the Rhine-Meuse delta in South Holland, Netherlands, that flows west from the confluence of the Oude Maas and Nieuwe Maas branches past the towns of Rozenburg and Maassluis. It continues as the Ni ...
and the Nieuwe Waterweg, to the North Sea. The Oude Maas branches off, near Dordrecht, farther down rejoining the Nieuwe Maas to form
Het Scheur Het Scheur (; Dutch for "The Rip") is a branch of the Rhine-Meuse delta in South Holland, Netherlands, that flows west from the confluence of the Oude Maas and Nieuwe Maas branches past the towns of Rozenburg and Maassluis. It continues as the Ni ...
. The other third of the water flows through the Pannerdens Kanaal and redistributes in the IJssel and Nederrijn. The IJssel branch carries one ninth of the water flow of the ''Rhine'' north into the
IJsselmeer The IJsselmeer (; fy, Iselmar, nds-nl, Iesselmeer), also known as Lake IJssel in English, is a closed off inland bay in the central Netherlands bordering the provinces of Flevoland, North Holland and Friesland. It covers an area of with an a ...
(a former bay), while the Nederrijn carries approximately two-ninths of the flow west along a route parallel to the Waal. However, at Wijk bij Duurstede, the Nederrijn changes its name and becomes the
Lek Lek or LEK may refer to: * Lek mating, mating in a lek, a type of animal territory in which males of a species gather * Albanian lek, the currency of Albania * Lek (magazine), a Norwegian softcore pornographic magazine * Lek (pharmaceutical comp ...
. It flows farther west, to rejoin the
Noord Noord () is a town and region in Aruba (part of the Kingdom of the Netherlands). This town is known for its low rise and high rise hotels, restaurants, beaches, malls, the California Lighthouse, and other places of attraction. Places of interest ...
into the Nieuwe Maas and to the North Sea. The name ''Rijn'', from here on, is used only for smaller streams farther to the north, which together formed the main river Rhine in Roman times. Though they retained the name, these streams no longer carry water from the Rhine, but are used for draining the surrounding land and
polder A polder () is a low-lying tract of land that forms an artificial hydrological entity, enclosed by embankments known as dikes. The three types of polder are: # Land reclaimed from a body of water, such as a lake or the seabed # Flood plains s ...
s. From Wijk bij Duurstede, the old north branch of the Rhine is called Kromme Rijn ("Bent Rhine") past Utrecht, first Leidse Rijn ("Rhine of Leiden") and then, Oude Rijn ("Old Rhine"). The latter flows west into a
sluice Sluice ( ) is a word for a channel controlled at its head by a movable gate which is called a sluice gate. A sluice gate is traditionally a wood or metal barrier sliding in grooves that are set in the sides of the waterway and can be considered ...
at Katwijk, where its waters can be discharged into the North Sea. This branch once formed the line along which the Limes Germanicus were built. During periods of lower sea levels within the various ice ages, the Rhine took a left turn, creating the Channel River, the course of which now lies below the English Channel. The Rhine-Meuse Delta, the most important natural region of the Netherlands begins near
Millingen aan de Rijn Millingen aan de Rijn () is a former municipality and a town in the eastern Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Ne ...
, close to the Dutch-German border with the division of the Rhine into Waal and Nederrijn. The region between the Dutch-German border and Rotterdam, where the Waal, Lek, and Meuse run more or less parallel, is colloquially known as the "Great Rivers". Since the Rhine contributes most of the water, the shorter term ''Rhine Delta'' is commonly used. However, this name is also used for the river delta where the Rhine flows into
Lake Constance Lake Constance (german: Bodensee, ) refers to three Body of water, bodies of water on the Rhine at the northern foot of the Alps: Upper Lake Constance (''Obersee''), Lower Lake Constance (''Untersee''), and a connecting stretch of the Rhine, ca ...
, so it is clearer to call the larger one ''Rhine-Meuse delta'', or even '' Rhine–Meuse–Scheldt delta'', as the Scheldt ends in the same delta. The shape of the Rhine delta is determined by two bifurcations: first, at
Millingen aan de Rijn Millingen aan de Rijn () is a former municipality and a town in the eastern Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Ne ...
, the Rhine splits into Waal and Pannerdens Kanaal, which changes its name to Nederrijn at
Angeren Angeren is a village in the municipality of Lingewaard, Gelderland province, Netherlands. It has a population of 2,851 (1 January 2009), and is located in the very eastern tip of the Betuwe, 2 km to the south of Huissen, between the cities ...
, and second near Arnhem, the IJssel branches off from the Nederrijn. This creates three main flows, two of which change names rather often. The largest and southern main branch begins as Waal and continues as Boven Merwede ("Upper Merwede"), Beneden Merwede ("Lower Merwede"),
Noord Noord () is a town and region in Aruba (part of the Kingdom of the Netherlands). This town is known for its low rise and high rise hotels, restaurants, beaches, malls, the California Lighthouse, and other places of attraction. Places of interest ...
("the North"), Nieuwe Maas ("New Meuse"),
Het Scheur Het Scheur (; Dutch for "The Rip") is a branch of the Rhine-Meuse delta in South Holland, Netherlands, that flows west from the confluence of the Oude Maas and Nieuwe Maas branches past the towns of Rozenburg and Maassluis. It continues as the Ni ...
("the Rip") and Nieuwe Waterweg ("New Waterway"). The middle flow begins as Nederrijn, then changes into
Lek Lek or LEK may refer to: * Lek mating, mating in a lek, a type of animal territory in which males of a species gather * Albanian lek, the currency of Albania * Lek (magazine), a Norwegian softcore pornographic magazine * Lek (pharmaceutical comp ...
, then joins the Noord, thereby forming Nieuwe Maas. The northern flow keeps the name IJssel until it flows into Lake
IJsselmeer The IJsselmeer (; fy, Iselmar, nds-nl, Iesselmeer), also known as Lake IJssel in English, is a closed off inland bay in the central Netherlands bordering the provinces of Flevoland, North Holland and Friesland. It covers an area of with an a ...
. Three more flows carry significant amounts of water: the Nieuwe Merwede ("New Merwede"), which branches off from the southern branch where it changes from Boven to Beneden Merwede; the Oude Maas ("Old Meuse"), which branches off from the southern branch where it changes from Beneden Merwede into Noord, and Dordtse Kil, which branches off from Oude Maas. Before the
St. Elizabeth's flood (1421) The St. Elizabeth's flood of 1421 was a flooding of the Grote Hollandse Waard, an area in what is now the Netherlands. It takes its name from the feast day of Saint Elisabeth of Hungary which was formerly 19 November. It ranks 20th on the list o ...
, the Meuse flowed just south of today's line Merwede-Oude Maas to the North Sea and formed an archipelago-like estuary with Waal and Lek. This system of numerous bays, estuary-like extended rivers, many islands and constant changes of the coastline, is hard to imagine today. From 1421 to 1904, the Meuse and Waal merged further upstream at Gorinchem to form Merwede. For flood protection reasons, the Meuse was separated from the Waal through a lock and diverted into a new outlet called " Bergse Maas", then Amer and then flows into the former bay Hollands Diep. The northwestern part of the estuary (around Hook of Holland), is still called ''Maasmond'' ("Meuse Mouth"), ignoring the fact that it now carries only water from the Rhine. This might explain the confusing naming of the various branches. The hydrography of the current delta is characterized by the delta's main arms, disconnected arms ( Hollandse IJssel, Linge, Vecht, etc.) and smaller rivers and streams. Many rivers have been closed ("dammed") and now serve as drainage channels for the numerous polders. The construction of Delta Works changed the Delta in the second half of the 20th century fundamentally. Currently Rhine water runs into the sea, or into former marine bays now separated from the sea, in five places, namely at the mouths of the Nieuwe Merwede, Nieuwe Waterway (Nieuwe Maas), Dordtse Kil,
Spui A single-point urban interchange (SPUI, or ), also called a single-point interchange (SPI) or single-point diamond interchange (SPDI), is a type of highway interchange. The design was created in order to help move large volumes of traffic thro ...
and IJssel. The Rhine-Meuse Delta is a tidal delta, shaped not only by the sedimentation of the rivers, but also by tidal currents. This meant that high tide formed a serious risk because strong tidal currents could tear huge areas of land into the sea. Before the construction of the Delta Works, tidal influence was palpable up to Nijmegen, and even today, after the regulatory action of the Delta Works, the tide acts far inland. At the Waal, for example, the most landward tidal influence can be detected between
Brakel Brakel () is a municipality in the Belgian province of East Flanders in the Denderstreek and the Flemish Ardennes. The name is derived from a Carolingian villa ''Braglo'' first mentioned in 866 and located in the center of Opbrakel. Since 1970, t ...
and Zaltbommel.


Geologic history


Alpine orogeny

The Rhine flows from the Alps to the
North Sea Basin The North Sea lies between Great Britain, Norway, Denmark, Germany, the Netherlands and Belgium. An epeiric sea on the European continental shelf, it connects to the Atlantic Ocean through the English Channel in the south and the Norwegian S ...
. The geography and geology of its present-day watershed has been developing since the Alpine orogeny began. In southern Europe, the stage was set in the Triassic Period of the Mesozoic Era, with the opening of the Tethys Ocean, between the Eurasian and African tectonic plates, between about 240  MBP and 220 MBP (million years before present). The present Mediterranean Sea descends from this somewhat larger Tethys sea. At about 180 MBP, in the Jurassic Period, the two plates reversed direction and began to compress the Tethys floor, causing it to be subducted under Eurasia and pushing up the edge of the latter plate in the Alpine Orogeny of the
Oligocene The Oligocene ( ) is a geologic epoch of the Paleogene Period and extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that define the epoch are well identified but the ...
and Miocene Periods. Several microplates were caught in the squeeze and rotated or were pushed laterally, generating the individual features of Mediterranean geography: Iberia pushed up the Pyrenees; Italy, the Alps, and Anatolia, moving west, the mountains of Greece and the islands. The compression and orogeny continue today, as shown by the ongoing raising of the mountains a small amount each year and the active volcanoes. In northern Europe, the North Sea Basin had formed during the Triassic and Jurassic periods and continued to be a sediment receiving basin since. In between the zone of Alpine orogeny and North Sea Basin subsidence, highlands resulting from an earlier orogeny (
Variscan The Variscan or Hercynian orogeny was a geologic mountain-building event caused by Late Paleozoic continental collision between Euramerica (Laurussia) and Gondwana to form the supercontinent of Pangaea. Nomenclature The name ''Variscan'', comes f ...
) remained, such as the
Ardennes The Ardennes (french: Ardenne ; nl, Ardennen ; german: Ardennen; wa, Årdene ; lb, Ardennen ), also known as the Ardennes Forest or Forest of Ardennes, is a region of extensive forests, rough terrain, rolling hills and ridges primarily in Be ...
,
Eifel The Eifel (; lb, Äifel, ) is a low mountain range in western Germany and eastern Belgium. It occupies parts of southwestern North Rhine-Westphalia, northwestern Rhineland-Palatinate and the southern area of the German-speaking Community of ...
and Vosges. From the Eocene onward, the ongoing Alpine orogeny caused a north–south rift system to develop in this zone. The main elements of this rift are the
Upper Rhine Graben The Upper Rhine Plain, Rhine Rift Valley or Upper Rhine Graben (German: ''Oberrheinische Tiefebene'', ''Oberrheinisches Tiefland'' or ''Oberrheingraben'', French: ''Vallée du Rhin'') is a major rift, about and on average , between Basel in the s ...
, in southwest Germany and eastern France and the Lower Rhine Embayment, in northwest Germany and the southeastern Netherlands. By the time of the Miocene, a river system had developed in the
Upper Rhine Graben The Upper Rhine Plain, Rhine Rift Valley or Upper Rhine Graben (German: ''Oberrheinische Tiefebene'', ''Oberrheinisches Tiefland'' or ''Oberrheingraben'', French: ''Vallée du Rhin'') is a major rift, about and on average , between Basel in the s ...
, that continued northward and is considered the first Rhine river. At that time, it did not yet carry discharge from the Alps; instead, the watersheds of the Rhone and Danube drained the northern flanks of the Alps.


Stream capture

The watershed of the Rhine reaches into the Alps today, but it did not start out that way.Berendsen and Stouthamer (2001) In the Miocene period, the watershed of the Rhine reached south, only to the
Eifel The Eifel (; lb, Äifel, ) is a low mountain range in western Germany and eastern Belgium. It occupies parts of southwestern North Rhine-Westphalia, northwestern Rhineland-Palatinate and the southern area of the German-speaking Community of ...
and Westerwald hills, about north of the Alps. The Rhine then had the Sieg as a tributary, but not yet the
Moselle The Moselle ( , ; german: Mosel ; lb, Musel ) is a river that rises in the Vosges mountains and flows through north-eastern France and Luxembourg to western Germany. It is a bank (geography), left bank tributary of the Rhine, which it jo ...
. The northern Alps were then drained by the Danube. Through
stream capture Stream capture, river capture, river piracy or stream piracy is a geomorphological phenomenon occurring when a stream or river drainage system or watershed is diverted from its own bed, and flows instead down the bed of a neighbouring stream. ...
, the Rhine extended its watershed southward. By the Pliocene period, the Rhine had captured streams down to the Vosges Mountains, including the Main and the
Neckar The Neckar () is a river in Germany, mainly flowing through the southwestern state of Baden-Württemberg, with a short section through Hesse. The Neckar is a major right tributary of the Rhine. Rising in the Schwarzwald-Baar-Kreis near Schwenn ...
. The northern Alps were then drained by the Rhone. By the early Pleistocene period, the Rhine had captured most of its current Alpine watershed from the Rhône, including the Aare. Since that time, the Rhine has added the watershed above
Lake Constance Lake Constance (german: Bodensee, ) refers to three Body of water, bodies of water on the Rhine at the northern foot of the Alps: Upper Lake Constance (''Obersee''), Lower Lake Constance (''Untersee''), and a connecting stretch of the Rhine, ca ...
( Vorderrhein,
Hinterrhein Hinterrhein can refer to: * Hinterrhein (river), a tributary of the Rhine * Hinterrhein, Switzerland, a municipality * Hinterrhein (district), the district including that Swiss municipality {{Disambig ...
, Alpenrhein; captured from the Rhône), the upper reaches of the Main, beyond Schweinfurt and the Moselle in the Vosges Mountains, captured during the Saale Ice-age from the Meuse, to its watershed. Around 2.5 million years ago (ending 11,600 years ago) the Ice Ages began. Since approximately 600,000 years ago, six major glacial periods have occurred, in which sea level dropped as much as and much of the continental margins were exposed. In the
Early Pleistocene The Early Pleistocene is an unofficial sub-epoch in the international geologic timescale in chronostratigraphy, being the earliest division of the Pleistocene Epoch within the ongoing Quaternary Period. It is currently estimated to span the time ...
, the Rhine followed a course to the northwest, through the present North Sea. During the so-called Anglian glaciation (~450,000 yr BP, marine oxygen isotope stage 12), the northern part of the present North Sea was blocked by the ice and a large lake developed, that overflowed through the English Channel. This caused the Rhine's course to be diverted through the English Channel. Since then, during glacial times, the river mouth was located offshore of Brest, France and rivers, like the River Thames and the
Seine ) , mouth_location = Le Havre/Honfleur , mouth_coordinates = , mouth_elevation = , progression = , river_system = Seine basin , basin_size = , tributaries_left = Yonne, Loing, Eure, Risle , tributarie ...
, became tributaries to the Rhine. During interglacials, when sea level rose to approximately the present level, the Rhine built deltas in what is now the Netherlands. The most recent glacial period ran from ~74,000 (BP = Before Present), until the end of the Pleistocene (~11,600 BP). In northwest Europe, it saw two very cold phases, peaking around 70,000 BP and around 29,000–24,000 BP. The last phase slightly predates the global last ice age maximum (
Last Glacial Maximum The Last Glacial Maximum (LGM), also referred to as the Late Glacial Maximum, was the most recent time during the Last Glacial Period that ice sheets were at their greatest extent. Ice sheets covered much of Northern North America, Northern Eur ...
). During this time, the lower Rhine flowed roughly west through the Netherlands and extended to the southwest, through the English Channel and finally, to the Atlantic Ocean. The English Channel, the Irish Channel and most of the North Sea were dry land, mainly because sea level was approximately lower than today. Most of the Rhine's current course was not under the ice during the last Ice Age; although, its source must still have been a glacier. A tundra, with Ice Age flora and fauna, stretched across middle Europe, from Asia to the Atlantic Ocean. Such was the case during the
Last Glacial Maximum The Last Glacial Maximum (LGM), also referred to as the Late Glacial Maximum, was the most recent time during the Last Glacial Period that ice sheets were at their greatest extent. Ice sheets covered much of Northern North America, Northern Eur ...
, ca. 22,000–14,000 yr BP, when ice-sheets covered Scandinavia, the Baltics, Scotland and the Alps, but left the space between as open tundra.
Loess Loess (, ; from german: Löss ) is a clastic, predominantly silt-sized sediment that is formed by the accumulation of wind-blown dust. Ten percent of Earth's land area is covered by loess or similar deposits. Loess is a periglacial or aeolian ...
(wind-blown topsoil dust) arose from the south and North Sea plain settling on the slopes of the Alps, Urals and the Rhine Valley, rendering the valleys facing the prevailing winds especially fertile.


End of the last glacial period

As northwest Europe slowly began to warm up from 22,000 years ago onward, frozen
subsoil Subsoil is the layer of soil under the topsoil on the surface of the ground. Like topsoil, it is composed of a variable mixture of small particles such as sand, silt and clay, but with a much lower percentage of organic matter and humus, and it ...
and expanded
alpine glaciers A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its ablation over many years, often centuries. It acquires distinguishing features, such as ...
began to thaw and fall-winter snow covers melted in spring. Much of the discharge was routed to the Rhine and its downstream extension. Rapid warming and changes of vegetation, to open forest, began about 13,000 BP. By 9000 BP, Europe was fully forested. With globally shrinking ice-cover, ocean water levels rose and the English Channel and North Sea re-inundated. Meltwater, adding to the ocean and land
subsidence Subsidence is a general term for downward vertical movement of the Earth's surface, which can be caused by both natural processes and human activities. Subsidence involves little or no horizontal movement, which distinguishes it from slope move ...
, drowned the former coasts of Europe transgressionally. About 11000 years ago, the Rhine estuary was in the Strait of Dover. There remained some dry land in the southern North Sea, known as Doggerland, connecting mainland Europe to Britain. About 9000 years ago, that last divide was overtopped / dissected. Man was already resident in the area when these events happened. Since 7500 years ago the situation of tides, currents and land-forms has resembled the present. Rates of sea level rise dropped such that natural sedimentation by the Rhine and coastal processes widely compensate for transgression by the sea. In the southern North Sea, due to ongoing tectonic subsidence, the coastline and sea bed are sinking at the rate of about per century (1 meter or 39 inches in last 3000 years). About 7000–5000 BP, a general warming encouraged migration of all former ice-locked areas, including up the Danube and down the Rhine by peoples to the east. A sudden massive expansion of the Black Sea as the Mediterranean Sea burst into it through the Bosporus may have occurred about 7500 BP.


Holocene delta

At the beginning of the Holocene (~11,700 years ago), the Rhine occupied its Late-Glacial valley. As a meandering river, it reworked its ice-age floodplain. As sea-level rise continued in the Netherlands, the formation of the Holocene Rhine-Meuse delta began (~8,000 years ago). Coeval absolute sea-level rise and tectonic subsidence have strongly influenced delta evolution. Other factors of importance to the shape of the delta are the local tectonic activities of the
Peel Boundary Fault Peel or Peeling may refer to: Places Australia * Peel (Western Australia) * Peel Island, Queensland * Peel, New South Wales * Peel River (New South Wales) Canada * Peel Parish, New Brunswick * Peel, New Brunswick, an unincorporated communi ...
, the substrate and
geomorphology Geomorphology (from Ancient Greek: , ', "earth"; , ', "form"; and , ', "study") is the scientific study of the origin and evolution of topographic and bathymetric features created by physical, chemical or biological processes operating at or n ...
, as inherited from the Last Glacial period and the coastal-marine dynamics, such as barrier and tidal inlet formations. Since ~3000 yr BP (= years Before Present), human impact is seen in the delta. As a result of increasing land clearance ( Bronze Age agriculture), in the upland areas (central Germany), the sediment load of the Rhine has strongly increased and delta growth has sped up.Gouw and Erkens (2007) This has caused increased flooding and sedimentation, ending peat formation in the delta. In the geologically recent past the main process distributing sediment across the delta has been the shifting of river channels to new locations on the floodplain (termed avulsion). Over the past 6000 years, approximately 80 avulsions have occurred. Direct human impact in the delta began with the mining of peat for salt and fuel from Roman times onward. This was followed by embankment of the major distributaries and damming of minor distributaries, which took place in the 11–13th century AD. Thereafter, canals were dug, bends were straightened and groynes were built to prevent the river's channels from migrating or silting up. At present, the branches Waal and Nederrijn-Lek discharge to the North Sea through the former Meuse estuary, near Rotterdam. The river IJssel branch flows to the north and enters the
IJsselmeer The IJsselmeer (; fy, Iselmar, nds-nl, Iesselmeer), also known as Lake IJssel in English, is a closed off inland bay in the central Netherlands bordering the provinces of Flevoland, North Holland and Friesland. It covers an area of with an a ...
(formerly the Zuider Zee), initially a brackish lagoon but a freshwater lake since 1932. The discharge of the Rhine is divided into three branches: the Waal (6/9 of total discharge), the Nederrijn – Lek (2/9 of total discharge) and the IJssel (1/9 of total discharge). This discharge distribution has been maintained since 1709 by river engineering works including the digging of the Pannerdens canal and the installation, in the 20th century, of a series of weirs on the Nederrijn.


Military and cultural history


Antiquity

The Rhine was not known to Herodotus and first enters the historical period in the 1st century BC in Roman-era geography. At that time, it formed the boundary between Gaul and
Germania Germania ( ; ), also called Magna Germania (English: ''Great Germania''), Germania Libera (English: ''Free Germania''), or Germanic Barbaricum to distinguish it from the Roman province of the same name, was a large historical region in north- ...
. Although it is estimated that germanic tribes have been inhabiting the area since 2000 BCE. The Upper Rhine had been part of the areal of the late
Hallstatt culture The Hallstatt culture was the predominant Western Europe, Western and Central European Archaeological culture, culture of Late Bronze Age Europe, Bronze Age (Hallstatt A, Hallstatt B) from the 12th to 8th centuries BC and Early Iron Age Europe ...
since the 6th century BC, and by the 1st century BC, the areal of the La Tène culture covered almost its entire length, forming a contact zone with the Jastorf culture, i.e. the locus of early
Celtic Celtic, Celtics or Keltic may refer to: Language and ethnicity *pertaining to Celts, a collection of Indo-European peoples in Europe and Anatolia **Celts (modern) *Celtic languages **Proto-Celtic language * Celtic music *Celtic nations Sports Fo ...
- Germanic cultural contact. In Roman geography, the Rhine formed the boundary between ''Gallia'' and ''Germania'' by definition; e.g. Maurus Servius Honoratus, ''Commentary on the Aeneid of Vergil'' (8.727) ''(Rhenus) fluvius Galliae, qui Germanos a Gallia dividit'' "(The Rhine is a) river of Gaul, which divides the Germanic people from Gaul." In Roman geography, the Rhine and Hercynia Silva were considered the boundary of the civilized world; as it was a wilderness, the Romans were eager to explore it. This view is typified by '' Res Gestae Divi Augusti'', a long public inscription of Augustus, in which he boasts of his exploits; including, sending an expeditionary fleet north of the Rheinmouth, to
Old Saxony "Old Saxony" is the original homeland of the Saxons. It corresponds roughly to the modern German states of Lower Saxony, eastern part of modern North Rhine-Westphalia state (Westphalia), Nordalbingia (Holstein, southern part of Schleswig-Holstein ...
and Jutland, which he claimed no Roman had ever done before. Augustus ordered his stepson Roman general
Drusus Drusus may refer to: * Claudius (Tiberius Claudius Drusus) (10 BC–AD 54), Roman emperor from 41 to 54 * Drusus Caesar (AD 8–33), adoptive grandson of Roman emperor Tiberius * Drusus Julius Caesar (14 BC–AD 23), son of Roman emperor Tiberius ...
to establish 50
military camps A military, also known collectively as armed forces, is a heavily armed, highly organized force primarily intended for warfare. It is typically authorized and maintained by a sovereign state, with its members identifiable by their distinct ...
along the Rhine, starting the Germanic Wars in 12 BC. At this time, the plain of the Lower Rhine was the territory of the Ubii. The first urban settlement, on the grounds of what is today Downtown Cologne, along the Rhine, was ''Oppidum Ubiorum'', which was founded in 38 BC by the Ubii. Cologne became acknowledged, as a city by the Romans in AD 50, by the name of ''Colonia Claudia Ara Agrippinensium''. From the death of Augustus in AD 14 until after AD 70, Rome accepted as her
Germanic frontier The (Latin for ''Germanic frontier'') is the name given in modern times to a line of frontier () fortifications that bounded the ancient Roman provinces of Germania Inferior, Germania Superior and Raetia, dividing the Roman Empire and the unsubd ...
the water-boundary of the Rhine and upper Danube. Beyond these rivers she held only the fertile plain of Frankfurt, opposite the Roman border fortress of Moguntiacum ( Mainz), the southernmost slopes of the Black Forest and a few scattered bridge-heads. The northern section of this frontier, where the Rhine is deep and broad, remained the Roman boundary until the empire fell. The southern part was different. The upper Rhine and upper Danube are easily crossed. The frontier which they form is inconveniently long, enclosing an acute-angled wedge of foreign territory between the modern Baden and Württemberg. The Germanic populations of these lands seem in Roman times to have been scanty, and Roman subjects from the modern Alsace-Lorraine had drifted across the river eastwards. The Romans kept eight legions in five bases along the Rhine. The number was reduced to four as more units were moved to the Danube. The actual number of legions present at any base or in all, depended on whether a state or threat of war existed. Between about AD 14 and 180, the assignment of legions was as follows: for the army of Germania Inferior, two legions at Vetera ( Xanten), '' I Germanica'' and '' XX Valeria'' (
Pannonia Pannonia (, ) was a province of the Roman Empire bounded on the north and east by the Danube, coterminous westward with Noricum and upper Italy, and southward with Dalmatia and upper Moesia. Pannonia was located in the territory that is now wes ...
n troops); two legions at oppidum Ubiorum ("town of the Ubii"), which was renamed to Colonia Agrippina, descending to Cologne, '' V Alaudae'', a Celtic legion recruited from
Gallia Narbonensis Gallia Narbonensis (Latin for "Gaul of Narbonne", from its chief settlement) was a Roman province located in what is now Languedoc and Provence, in Southern France. It was also known as Provincia Nostra ("Our Province"), because it was the ...
and '' XXI'', possibly a
Galatia Galatia (; grc, Γαλατία, ''Galatía'', "Gaul") was an ancient area in the highlands of central Anatolia, roughly corresponding to the provinces of Ankara and Eskişehir, in modern Turkey. Galatia was named after the Gauls from Thrace (c ...
n legion from the other side of the empire. For the army of
Germania Superior Germania Superior ("Upper Germania") was an imperial province of the Roman Empire. It comprised an area of today's western Switzerland, the French Jura and Alsace regions, and southwestern Germany. Important cities were Besançon ('' Vesontio' ...
: one legion, '' II Augusta'', at Argentoratum (
Strasbourg Strasbourg (, , ; german: Straßburg ; gsw, label=Bas Rhin Alsatian, Strossburi , gsw, label=Haut Rhin Alsatian, Strossburig ) is the prefecture and largest city of the Grand Est region of eastern France and the official seat of the Eu ...
); and one, '' XIII Gemina'', at Vindonissa (
Windisch Windisch may refer to: * Windisch (surname) (including a list of people with the name) * Windisch, Switzerland, a municipality in the canton of Aargau * Windisch (ethnonym), German word Wends for Slavs * Windisch Kamnitz, German name of Srbská Ka ...
). Vespasian had commanded II Augusta, before he became emperor. In addition, were a double legion, XIV and XVI, at Moguntiacum ( Mainz). The two original military districts of Germania Inferior and
Germania Superior Germania Superior ("Upper Germania") was an imperial province of the Roman Empire. It comprised an area of today's western Switzerland, the French Jura and Alsace regions, and southwestern Germany. Important cities were Besançon ('' Vesontio' ...
, came to influence the surrounding tribes, who later respected the distinction in their alliances and confederations. For example, the upper Germanic peoples combined into the
Alemanni The Alemanni or Alamanni, were a confederation of Germanic tribes * * * on the Upper Rhine River. First mentioned by Cassius Dio in the context of the campaign of Caracalla of 213, the Alemanni captured the in 260, and later expanded into pres ...
. For a time, the Rhine ceased to be a border, when the Franks crossed the river and occupied Roman-dominated Celtic Gaul, as far as Paris. Germanic tribes crossed the Rhine in the
Migration period The Migration Period was a period in European history marked by large-scale migrations that saw the fall of the Western Roman Empire and subsequent settlement of its former territories by various tribes, and the establishment of the post-Roman ...
, by the 5th century establishing the kingdoms of Francia on the Lower Rhine,
Burgundy Burgundy (; french: link=no, Bourgogne ) is a historical territory and former administrative region and province of east-central France. The province was once home to the Dukes of Burgundy from the early 11th until the late 15th century. The c ...
on the Upper Rhine and Alemannia on the High Rhine. This "
Germanic Heroic Age The Germanic (or "German") Heroic Age, so called in analogy to the Heroic Age of Greek mythology, is the period of early historic or quasi-historic events reflected in Germanic heroic poetry. Periodisation The period corresponds to the Germani ...
" is reflected in medieval legend, such as the '' Nibelungenlied'' which tells of the hero Siegfried killing a dragon on the Drachenfels (Siebengebirge) ("dragons rock"), near Bonn at the Rhine and of the Burgundians and their court at Worms, at the Rhine and Kriemhild's golden treasure, which was thrown into the Rhine by Hagen.


Medieval and modern history

By the 6th century, the Rhine was within the borders of Francia. In the 9th, it formed part of the border between Middle and Western Francia, but in the 10th century, it was fully within the Holy Roman Empire, flowing through
Swabia Swabia ; german: Schwaben , colloquially ''Schwabenland'' or ''Ländle''; archaic English also Suabia or Svebia is a cultural, historic and linguistic region in southwestern Germany. The name is ultimately derived from the medieval Duchy of ...
, Franconia and Lower Lorraine. The mouths of the Rhine, in the county of Holland, fell to the Burgundian Netherlands in the 15th century; Holland remained contentious territory throughout the
European wars of religion The European wars of religion were a series of wars waged in Europe during the 16th, 17th and early 18th centuries. Fought after the Protestant Reformation began in 1517, the wars disrupted the religious and political order in the Catholic Chu ...
and the eventual collapse of the Holy Roman Empire, when the length of the Rhine fell to the First French Empire and its client states. The Alsace on the left banks of the Upper Rhine was sold to Burgundy by Archduke Sigismund of Austria in 1469 and eventually fell to France in the Thirty Years' War. The numerous historic
castles in Rhineland-Palatinate A castle is a type of fortified structure built during the Middle Ages predominantly by the nobility or royalty and by military orders. Scholars debate the scope of the word ''castle'', but usually consider it to be the private fortified r ...
attest to the importance of the river as a commercial route. Since the
Peace of Westphalia The Peace of Westphalia (german: Westfälischer Friede, ) is the collective name for two peace treaties signed in October 1648 in the Westphalian cities of Osnabrück and Münster. They ended the Thirty Years' War (1618–1648) and brought pea ...
, the Upper Rhine formed a contentious border between France and Germany. Establishing " natural borders" on the Rhine was a long-term goal of French foreign policy, since the Middle Ages, though the
language border A language border or language boundary is the line separating two language areas. The term is generally meant to imply a lack of mutual intelligibility between the two languages. If two adjacent languages or dialects are mutually intelligible, no ...
was – and is – far more to the west. French leaders, such as Louis XIV and
Napoleon Bonaparte Napoleon Bonaparte ; it, Napoleone Bonaparte, ; co, Napulione Buonaparte. (born Napoleone Buonaparte; 15 August 1769 – 5 May 1821), later known by his regnal name Napoleon I, was a French military commander and political leader who ...
, tried with varying degrees of success to annex lands west of the Rhine. The Confederation of the Rhine was established by Napoleon, as a French client state, in 1806 and lasted until 1814, during which time it served as a significant source of resources and military manpower for the First French Empire. In 1840, the Rhine crisis, prompted by French prime minister
Adolphe Thiers Marie Joseph Louis Adolphe Thiers ( , ; 15 April 17973 September 1877) was a French statesman and historian. He was the second elected President of France and first President of the French Third Republic. Thiers was a key figure in the July Rev ...
desire to reinstate the Rhine as a natural border, led to a diplomatic crisis and a wave of nationalism in Germany. The Rhine became an important symbol in German nationalism during the formation of the German state in the 19th century (see Rhine romanticism). * The song '' Die Wacht am Rhein'', which almost became a national anthem. * '' Das Rheingold'' – inspired by the '' Nibelungenlied'', the Rhine is one of the settings for the first opera of
Richard Wagner Wilhelm Richard Wagner ( ; ; 22 May 181313 February 1883) was a German composer, theatre director, polemicist, and conductor who is chiefly known for his operas (or, as some of his mature works were later known, "music dramas"). Unlike most op ...
's '' Der Ring des Nibelungen''. The action of the epic opens and ends underneath the Rhine, where three Rheinmaidens swim and protect a hoard of gold. * The Loreley/Lorelei is a rock on the eastern bank of the Rhine, that is associated with several legendary tales, poems and songs. The river spot has a reputation for being a challenge for inexperienced navigators. At the end of World War I, the Rhineland was subject to the Treaty of Versailles. This decreed that it would be occupied by the allies, until 1935 and after that, it would be a demilitarized zone, with the German army forbidden to enter. The Treaty of Versailles and this particular provision, in general, caused much resentment in Germany and is often cited as helping Adolf Hitler's rise to power. The allies left the Rhineland, in 1930 and the German army re-occupied it in 1936, which was enormously popular in Germany. Although the allies could probably have prevented the reoccupation, Britain and France were not inclined to do so, a feature of their policy of
appeasement Appeasement in an international context is a diplomatic policy of making political, material, or territorial concessions to an aggressive power in order to avoid conflict. The term is most often applied to the foreign policy of the UK governm ...
to Hitler. In World War II, it was recognized that the Rhine would present a formidable natural obstacle to the invasion of Germany, by the Western Allies. The Rhine bridge at Arnhem, immortalized in the book, '' A Bridge Too Far'' and the
film A film also called a movie, motion picture, moving picture, picture, photoplay or (slang) flick is a work of visual art that simulates experiences and otherwise communicates ideas, stories, perceptions, feelings, beauty, or atmosphere ...
, was a central focus of the battle for Arnhem, during the failed
Operation Market Garden Operation Market Garden was an Allies of World War II, Allied military operation during the World War II, Second World War fought in the Netherlands from 17 to 27 September 1944. Its objective was to create a Salient (military), salient into G ...
of September 1944. The bridges at
Nijmegen Nijmegen (;; Spanish and it, Nimega. Nijmeegs: ''Nimwèège'' ) is the largest city in the Dutch province of Gelderland and tenth largest of the Netherlands as a whole, located on the Waal river close to the German border. It is about 6 ...
, over the Waal distributary of the Rhine, were also an objective of
Operation Market Garden Operation Market Garden was an Allies of World War II, Allied military operation during the World War II, Second World War fought in the Netherlands from 17 to 27 September 1944. Its objective was to create a Salient (military), salient into G ...
. In a separate operation, the Ludendorff Bridge, crossing the Rhine at Remagen, became famous, when U.S. forces were able to capture it intact – much to their own surprise – after the Germans failed to demolish it. This also became the subject of a film, '' The Bridge at Remagen''. '' Seven Days to the River Rhine'' was a Warsaw Pact war plan for an invasion of Western Europe during the
Cold War The Cold War is a term commonly used to refer to a period of geopolitical tension between the United States and the Soviet Union and their respective allies, the Western Bloc and the Eastern Bloc. The term '' cold war'' is used because the ...
. Until 1932 the generally accepted length of the Rhine was . In 1932 the German encyclopedia Knaurs Lexikon stated the length as , presumably a typographical error. After this number was placed into the authoritative Brockhaus Enzyklopädie, it became generally accepted and found its way into numerous textbooks and official publications. The error was discovered in 2010, and the Dutch Rijkswaterstaat confirms the length at .


Lists of features


Cities on the Rhine

Large cities that are situated on the Rhine: Switzerland: * Basel France: *
Strasbourg Strasbourg (, , ; german: Straßburg ; gsw, label=Bas Rhin Alsatian, Strossburi , gsw, label=Haut Rhin Alsatian, Strossburig ) is the prefecture and largest city of the Grand Est region of eastern France and the official seat of the Eu ...
Germany: * Karlsruhe * Mannheim *
Ludwigshafen Ludwigshafen, officially Ludwigshafen am Rhein (; meaning " Ludwig's Port upon Rhine"), is a city in the German state of Rhineland-Palatinate, on the river Rhine, opposite Mannheim. With Mannheim, Heidelberg, and the surrounding region, it form ...
* Wiesbaden * Mainz *
Koblenz Koblenz (; Moselle Franconian language, Moselle Franconian: ''Kowelenz''), spelled Coblenz before 1926, is a German city on the banks of the Rhine and the Moselle, a multi-nation tributary. Koblenz was established as a Roman Empire, Roman mili ...
* Bonn * Cologne * Leverkusen * Neuss * Düsseldorf * Krefeld ( Uerdingen) * Duisburg Netherlands: * Arnhem (Nederrijn) *
Nijmegen Nijmegen (;; Spanish and it, Nimega. Nijmeegs: ''Nimwèège'' ) is the largest city in the Dutch province of Gelderland and tenth largest of the Netherlands as a whole, located on the Waal river close to the German border. It is about 6 ...
(Waal) * Utrecht (Kromme Rijn) * Rotterdam (Nieuwe Maas) Smaller cities that are situated on the Rhine: Switzerland: * Chur *
Kreuzlingen Kreuzlingen is a municipality in the district of Kreuzlingen in the canton of Thurgau in north-eastern Switzerland. It is the seat of the district and is the second-largest city of the canton, after Frauenfeld, with a population of about 22,000. ...
* Schaffhausen Liechtenstein: * Vaduz Germany: * Konstanz * Breisach * Speyer * Worms * Bingen am Rhein * Rüdesheim am Rhein * Neuwied * Andernach * Bad Honnef * Königswinter *
Niederkassel Niederkassel ( Ripuarian: ''Neddekaaßel'') is a town in the Rhein-Sieg district, in North Rhine-Westphalia, Germany, with a population of around 37,000 people. It is situated on the right bank of the Rhine, approx. north-east of Bonn and south ...
*
Wesseling Wesseling () is an industrial German city on the Rhine bordering Cologne city on the south. With three chemical plants and a petroleum refinery within its city limits, it has an important place in the international petrochemical industry. Histor ...
* Dormagen *
Zons Zons (), formerly known as Feste Zons ''( Fortress Zons''), today officially called ''Stadt Zons'' (''Zons Town'') is an old town in Germany on the west bank of the Lower Rhine between Cologne and Düsseldorf. It has been a part (Stadtteil) of th ...
* Monheim am Rhein * Wesel * Xanten * Emmerich am Rhein Netherlands: * Zutphen (IJssel) *
Deventer Deventer (; Sallands: ) is a city and municipality in the Salland historical region of the province of Overijssel, Netherlands. In 2020, Deventer had a population of 100,913. The city is largely situated on the east bank of the river IJssel, bu ...
(IJssel) * Zwolle (IJssel) *
Kampen Campen or Kampen may refer to: Places Finland * Kampen, the Swedish name of Kamppi, a district in Helsinki Germany * Campen, Germany, a village by the Ems estuary, northwestern Germany, home of the Campen Lighthouse * Campen Castle, a part ...
(IJssel) * Leiden (Oude Rijn) * Dordrecht (Merwede) * Wageningen (Nederrijn) * Woerden (Oude Rijn) * Wijk bij Duurstede ( Neder Rijn / Kromme Rijn / Lek ) *
Alphen aan den Rijn Alphen aan den Rijn (; en, "Alphen upon Rhine" or "Alphen on the Rhine") is a city and municipality in the western Netherlands, in the province of South Holland. The city is situated on the banks of the river Oude Rijn (Old Rhine), where the r ...
( Oude Rijn )


Countries and borders

During its course from the Alps to the North Sea, the Rhine passes through four countries and constitutes six different country borders. On the various parts: * the Anterior Rhine lies entirely within Switzerland, while at least one tributary to Posterior Rhine, ''Reno di Lei'' originates in Italy, but is not considered a part of the Rhine proper. * the Alpine Rhine flows within Switzerland till
Sargans Sargans is a municipality in the ''Wahlkreis'' (constituency) of Sarganserland in the canton of St. Gallen in Switzerland. Sargans is known for its castle, which dates from before the founding of the Swiss Confederation in 1291. Sargans was also ...
, from which it becomes the border between Switzerland (to the west) and Liechtenstein (to the east) until Oberriet, and the river never flows within Liechtenstein. It then becomes the border between Switzerland (to the west) and Austria (to the east) until Diepoldsau where the modern and straight course enters Switzerland, while the original course ''Alter Rhein'' makes a bend to the east and continues as the Swiss-Austrian border until the confluence at
Widnau Widnau is a municipality in the ''Wahlkreis'' (constituency) of Rheintal in the canton of St. Gallen in Switzerland. History In 1883 the municipality was created when it separated from Diepoldsau.Lustenau, where the modern and straight course enters Austria (the only part of the river that flows within Austria), while the original course makes a bend to the west and continues as the border, until both courses enter
Lake Constance Lake Constance (german: Bodensee, ) refers to three Body of water, bodies of water on the Rhine at the northern foot of the Alps: Upper Lake Constance (''Obersee''), Lower Lake Constance (''Untersee''), and a connecting stretch of the Rhine, ca ...
. * the first half of ''Seerhein'', between the upper and lower body of Lake Constance, flows within Germany (and the city of Konstanz), while the second is the German (to the north) – Swiss (to the south) frontier. * the first parts of the High Rhine, from Lake Constance to Altholz, the river alternates flowing within Switzerland and being the German-Swiss frontier (three times each). From Altholz the river is the German-Swiss border until Basel, where it enters Switzerland for the last time. * the Upper Rhine is the border between France (to the west) and Switzerland (to the east) for a short distance, from Basel to Hunningue. Here it becomes the Franco (to the west) – German (to the east) frontier until
Au am Rhein Au am Rhein is a municipality in the district of Rastatt in Baden-Württemberg in Germany Germany,, officially the Federal Republic of Germany, is a country in Central Europe. It is the second most populous country in Europe after ...
. Hence, the main course of the Rhine never flows within France, although some river canals do. From Au am Rhein the river flows within Germany. * the Middle Rhine flows entirely within Germany. * the Lower Rhine flows within Germany until Emmerich am Rhein, where it becomes the border between The Netherlands (to the north) and Germany (to the south). At
Millingen aan de Rijn Millingen aan de Rijn () is a former municipality and a town in the eastern Netherlands ) , anthem = ( en, "William of Nassau") , image_map = , map_caption = , subdivision_type = Sovereign state , subdivision_name = Kingdom of the Ne ...
the river enters the Netherlands. * all parts of the Delta Rhein flows within the Netherlands until they enter the North Sea,
IJsselmeer The IJsselmeer (; fy, Iselmar, nds-nl, Iesselmeer), also known as Lake IJssel in English, is a closed off inland bay in the central Netherlands bordering the provinces of Flevoland, North Holland and Friesland. It covers an area of with an a ...
( IJssel) or
Haringvliet The Haringvliet is a large inlet of the North Sea, in the province of South Holland in the Netherlands. It is an important estuary of the Rhine-Meuse delta. Near Numansdorp, the Hollands Diep splits into the Haringvliet and the Volkerak estu ...
( Waal) at the Dutch coast.


Bridges


Former distributaries

''Order: panning north to south through the Western Netherlands'': * Vecht (Utrecht) (minor channel in Roman times, flowing into former Zuider Zee lagoon) * Kromme RijnOude Rijn (Utrecht and South Holland) (main channel in Roman times, dammed in the 12th century) * Hollandse IJssel (formed after Roman times, dammed in the 13th century AD) * Linge (big channel in Roman times, dammed in the 14th century AD) * De Biesbosch-area (initiated by AD 1421–1424 storm surges and river floods, by-passed since the digging of Nieuwe Merwede canal in AD 1904)


Canals

''Order: upstream to downstream'': * Rhine–Main–Danube Canal – southeastern Germany *
Grand Canal d'Alsace The Grand Canal of Alsace (, ) is a canal in eastern France, channeling the Upper Rhine river. It is 50 kilometers (about 30 miles) long between Kembs and Vogelgrun, and provides access to the region from the Rhine River, Basel in Switzerland, ...
– eastern France * Rhine-Herne Canal – northwest Germany, connection to the Dortmund-Ems Canal and the Mittellandkanal * Maas-Waal Canal – eastcentral Netherlands * Amsterdam-Rhine Canal – central Netherlands * Scheldt-Rhine Canal – southwest Netherlands *
Canal of Drusus The Canals of Drusus ( la, Fossae Drusianae) were Roman canals constructed for military purposes by Nero Claudius Drusus around 12 BC. It is believed to have linked the Rhine delta with the Lake Flevo, (today's IJsselmeer). They facilitated troop t ...


See also

*
Central Commission for Navigation on the Rhine The Central Commission for the Navigation of the Rhine (CCNR; french: link=no, Commission centrale pour la navigation du Rhin; german: link=no, Zentralkommission für die Rheinschifffahrt; nl, link=no, Centrale Commissie voor de Rijnvaart) is an ...
*
EV15 The Rhine Cycle Route EuroVelo 15 (EV15), named the ''Rhine Cycle Route'', is a EuroVelo long-distance cycling route running 1230km along the Rhine river valley from the headwaters of the Rhine in Andermatt in Switzerland to the river's mouth in Hook of Holland in t ...
* Köln-Düsseldorfer *
Piz Lunghin Piz Lunghin (2,780 m) is a mountain in the Swiss canton of Graubünden, located in the Albula range, overlooking the Maloja Pass. It is considered as the "roof of Europe" as the peak is nearby the triple watershed of the Lunghin pass. Water ...
(triple watershed: Po–Rhine–Danube) *
Witenwasserenstock The Witenwasserenstock (3,082 m) is a peak between the Swiss cantons of Valais and Uri, located in the Lepontine Alps. Close to the summit lies the tripoint border between the cantons of Valais, Uri and Ticino and the triple watershed of the R ...
(triple watershed: Rhone–Rhine–Po) *
List of old waterbodies of the Rhine This list of old waterbodies of the Rhine contains a selection of ox-bow lakes and meanders of the River Rhine which go under various names that mean Old Rhine or Old Arm f the Rhine Alter Rhein, Altrhein, Altrheinarm, Altrheinzug, Altarm, Rhei ...


Notes and references


Notes


References


Bibliography

* * * * * * * * * *


External links


Rhine
with maps and details of navigation through the French section; places, ports and moorings, by the author of ''Inland Waterways of France'', Imray
Navigation details for 80 French rivers and canals
(French waterways website section)
Old maps of the Rhine
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